A bstract A long-standing and intriguing question is: does the holographic principle apply to
cosmologies like de Sitter spacetime? In this work, we consider a half dS spacetime wherein …

We propose a new duality relation between codimension-two space-like surfaces in
gravitational theories and quantum states in dual Hilbert spaces. This surface state …

A bstract In this work, we propose a testing procedure to distinguish between the different
approaches for computing complexity. Our test does not require a direct comparison …

We investigate various aspects of the Lanczos coefficients in a family of free Lifshitz scalar
theories, characterized by their integer dynamical exponent, at finite temperature. In this non …

Quantum entanglement is the most surprising feature of quantum mechanics. Entanglement
is simultaneously responsible for the difficulty of simulating quantum matter on a classical …

A bstract The entanglement entropy of three-dimensional conformal field theories contains a
universal contribution coming from corners in the entangling surface. We study these …

In this paper, we discuss tensor network descriptions of AdS/CFT from two different
viewpoints. First, we start with a Euclidean path-integral computation of ground state wave …

A bstract We compute the entanglement of purification (EoP) in a 2d free scalar field theory
with various masses. This quantity measures correlations between two subsystems and is …

A bstract We study different aspects of quantum entanglement and its measures, including
entanglement entropy in the vacuum state of a certain Lifshitz free scalar theory. We present …

We review some recent results on Sorkin's spacetime formulation of the entanglement
entropy (SSEE) for a free quantum scalar field both in the continuum and in manifold-like …